Self and stillman moore



GEORGE N. MUN GER, OII NEW HAVEN, CONNECTICUT, ASSIGNOR TO- HIM- SELF AND STILLMAN MOORE, OF SAME PLACE.

4Letters Patent No. I82,627, dated September 29, 1868.

ENGEAVERS VISE.

To ALL wHoM 1T MAY coNeERN':

Be it known that I, GEORGE N. VMUNG'LR, of New Haven, in' the county of New Haven, and State of Connecticut, have invented a new Improvement in Engravers vise; and I do hereby declare the Lfollowing, when taken in connection with the'accoxnpanying drawings,i1nd the letters of reference marked' thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this specification, andrepresent, in

Figure 1, a perspective view,

Figure 2 a vertical section across the two jaws,

Figure 3 a transverse section between the jaws, and in Figure 4 a perspective View of one of the jaws inverted.

This inventin relates to an improvementin the instrument used by engravers for holding small articles,

as spoons, forks, &c., for engraving, the object being to construct a vise easily adjustable, simple inrits operation; and cheap irrite construction ,v and 'consists in-the arrangement, upon the head of the block, of a plate, in the surface oi'- which i s cut aV spiralthread, and over the said plate is arranged another divided plate, the divis- ,ion between the two parts forming 'a guide for the two jaws, the said two jaws extending down intovthe thread on the lower plate, and so that, by the revolving of the upper plate and jaws, thejaws will traverse to or from each other, according tothe direction in which the plate is turned.. I Y

To enable others to construct my improvement, I will fully describe thesame, as illustrated inrthe accompanying drawings.

A is a. block, such as is used by engl-overs, upon the upper end of which I fix a plate, B, (see figs. '2 and 3,)

.upon the upper surface of which plate is formed a spiral thread, and above the said plate B, and pivoted through the centre thereto, I arrange another plate, C, so as toturn freely around upon the plate B, the said upper plate being divided, or having a groove through the centre, as seen in figs. 1 and 3, into which saidrgrooves are set twov jaws, D and (seen in figs. l and 2,) thev said jaws being provided upon their under side with points or studs, which -set into the grooves in the lower plate, one of the said jaws each side of 'the centre, as

Aseen in figs1 and 2.

` The shank of the saidjaws which extendsA into the groove on the plate C, has formed, thereon an annular groove, a, into which, on the plate C,` another plate, F, upon each side, is fixed, so as to set into the said annular groove, and prevent the removal of the jaws from the plate.

Tbe'sad jaws are formed so that they may freely turn to an angle to each other; therefore, by turning the plate C, which also turns the jaws, the jaws are drawn toward or from each other, according to the direction in wbichthe plate is turned, and being free, so as to incline to each other, the two jaws will conform them- `:selves t'o the'ar-ticle to be grasped. Thus, by turning the plate-in the direction for the jaws to approach each other, the article to be wrought will be firmly grasped, and so held till released by reversing the plate C.

Having -thus fully described my invention, what I claim as new and usefuland desire to secure by Letters Patent, isy The engraversv'vise herein described, consisting of the two jaws D 'and E, arranged upon the threaded plate B, and in the plate C, so as tombe adjusted to grasp th article of regular or irregular form, substantially as herein set forth. GEO. N. MUNGER. f

Witnesses:

J. H. SHUMWAY, A J, TIBBrrs 

